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The monthly expenditures on food by single adults living in one neighborhood of Los Angeles are normally distributed with a mean of $ 370 and a standard deviation of $ 40. Determine the percentage of samples of size 16 that will have mean monthly expenditures on food within $ 18 of the population mean expenditure of? $370. Round to two decimal places.
in a study of pregnant women and their ability to correctly predict the sex of their baby 56 of the pregnant women had
We measure the self esteem scores of a sample of statistics students, reasoning that this course may lower their self esteem relative to that of the typical college student (µ=55 and σ x =11.35) We obtain these scores:
determine whether the probabilities are computed using classical methods empirical method or subjective method.a- the
Describe the difference between quantitative and mixed methods, what are the general advantages and disadvantages of the two research approaches featured in the articles.
If you buy a set of these tires, would it be reasonable for you to hope they ‘ll last 40,000 miles? Explain.- Approximately what fraction of these tires can be expected to last less than 30,000 miles?
Create a 90% confidence interval for the difference in the percentage of smokers between black and white adults in New Jersey.
In each case, briefly discuss whether you think the available sample data can be used to make an inference about the larger population.
A positive integer valued random variable N is a stopping time with respect to the discrete time stochastic process {X1, X2, · · · } if for every n, the event {N = n} is determined by the values of {X1, X2, · · · , Xn}.
According to an article in USA Today, 90% of Americans will suffer from high blood pressure as they age. Out of 20 randomly chosen people what is the probability that at most 3 will suffer from high blood pressure?
In a survey on the quality of customer service at Car Toys, customers were asked to rate the service on a scale from 1 to 10, with 10 being that a customer was completely satisfied.
The scores, X, of an examination may be assumed to be normally distributed with μ = 70 and σ2 = 49. What is the probability that:
With3 discrete variables(50 states, urban, and rural) and2 continuous variables(average time, 5 types of transportation). I need themean, median, mode, standard deviation.
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